221121102110 has 64 divisors (see below), whose sum is σ = 419179276800. Its totient is φ = 83859280512.

The previous prime is 221121102071. The next prime is 221121102121. The reversal of 221121102110 is 11201121122.

221121102110 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16812557 + ... + 16825703.

It is an arithmetic number, because the mean of its divisors is an integer number (6549676200).

Almost surely, 2^221121102110 is an apocalyptic number.

221121102110 is a deficient number, since it is larger than the sum of its proper divisors (198058174690).

221121102110 is a wasteful number, since it uses less digits than its factorization.

221121102110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14225.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221121102110 its reverse (11201121122), we get a palindrome (232322223232).

The spelling of 221121102110 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred two thousand, one hundred ten".